using System;
using System.Runtime.InteropServices;

namespace Recordingtest.Recorder;

internal static class NativeMethods
{
    public const int WH_KEYBOARD_LL = 13;
    public const int WH_MOUSE_LL = 14;

    public const int WM_KEYDOWN = 0x0100;
    public const int WM_KEYUP = 0x0101;
    public const int WM_SYSKEYDOWN = 0x0104;
    public const int WM_SYSKEYUP = 0x0105;

    public const int WM_LBUTTONDOWN = 0x0201;
    public const int WM_LBUTTONUP = 0x0202;
    public const int WM_RBUTTONDOWN = 0x0204;
    public const int WM_RBUTTONUP = 0x0205;
    public const int WM_MBUTTONDOWN = 0x0207;
    public const int WM_MBUTTONUP = 0x0208;
    public const int WM_MOUSEWHEEL = 0x020A;
    public const int WM_MOUSEMOVE = 0x0200;

    public delegate IntPtr HookProc(int nCode, IntPtr wParam, IntPtr lParam);

    [StructLayout(LayoutKind.Sequential)]
    public struct POINT
    {
        public int x;
        public int y;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct MSLLHOOKSTRUCT
    {
        public POINT pt;
        public uint mouseData;
        public uint flags;
        public uint time;
        public IntPtr dwExtraInfo;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct KBDLLHOOKSTRUCT
    {
        public uint vkCode;
        public uint scanCode;
        public uint flags;
        public uint time;
        public IntPtr dwExtraInfo;
    }

    [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    public static extern IntPtr SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hMod, uint dwThreadId);

    [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool UnhookWindowsHookEx(IntPtr hhk);

    [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    public static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, IntPtr lParam);

    [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    public static extern IntPtr GetModuleHandle(string? lpModuleName);

    [DllImport("user32.dll")]
    public static extern int GetMessage(out MSG lpMsg, IntPtr hWnd, uint wMsgFilterMin, uint wMsgFilterMax);

    [DllImport("user32.dll")]
    public static extern bool TranslateMessage(ref MSG lpMsg);

    [DllImport("user32.dll")]
    public static extern IntPtr DispatchMessage(ref MSG lpMsg);

    [DllImport("user32.dll")]
    public static extern void PostQuitMessage(int nExitCode);

    [DllImport("user32.dll")]
    public static extern IntPtr WindowFromPoint(POINT pt);

    [DllImport("user32.dll")]
    public static extern IntPtr GetForegroundWindow();

    [DllImport("user32.dll")]
    public static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint lpdwProcessId);

    [StructLayout(LayoutKind.Sequential)]
    public struct MSG
    {
        public IntPtr hwnd;
        public uint message;
        public IntPtr wParam;
        public IntPtr lParam;
        public uint time;
        public POINT pt;
    }
}